Conduit.



No. 765,631. PATENTED JULY 19, 1904. J. D. McNAB.

GONDUIT.

APPLICATION FILED JULY 21, 1903.

N0 MODEL.

@Aw. 5 g g UNITED STATES Patented July 19, 1904.

JOSEPH D. MONAB, OF FILLMORE, CALIFORNIA.

CONDUIT.

SPECIFICATION forming part of Letters Patent No. 765,631, dated July 19,1904.

Application filed July 21, 1903. Serial No. 166,495. (No model- To allwhom it may concern:

Be it known that I, JOSEPH D. MCNAB, a citizen of the United States,residing at Fillmore, in the county of Ventura and State of California,have invented a new and useful Conduit, of which the following is aspecification.

In countries where irrigation is practiced the conduits which carry anddistribute the water are often formed from lumber, which is nailedtogether to form fiumes. These flumes are subjected to the alternateaction of the water and the sun and air, which causes contraction andexpansion of the material, thereby causing the seams to open, with aconsequent loss of water and considerable annoyance and trouble intightening up the seam. In tanks for holding liquids the liquid-level isconstantly changing, and when the tank is composed of wood the materialabove the liquid-line shrinks and the seams between the pieces of woodopen, and when the liquidlevel in the tank again rises more or less ofthe liquid flows out through the seams before they again become tight,thereby involving loss and annoyance from the escaping liquids. By myimproved process this trouble is almost wholly overcome.

In the drawing accompanying this specification, which is a perspectiveView of the end of a piece of water-flume, I have illustrated myimproved process as applied thereto.

In the drawing, A represents the usual frame-timbers of the flume, B theside walls, and O the bottom, thereof, which are of'ordinaryconstruction. On the inside of the sides and bottom I secure heavy paperD, which is secured thereto in any suitable manner. I prefer to securethe same to the sides and bottom by nailing thin narrow strips of wood Eat the top of the flume and also at the corners thereof, after which Icover the paper and the binding-strips with a heavy coat of hotasphaltum of a quality which when cool will remain reasonably firm underany temperature which the flume may be subjected to. Liquid-tanks arelined in the same manner.

Heretofore in the making of flumes and liquid-tanks of wood the verybest quality of timber suitable for that purpose has been selected, asit was free from knots and less liable to be influenced by the alternateaction of the water and sun and air.

By my improved process it will be seen that an inferior quality oflumber may be used, as my improved process of lining the same preventsthe water from contacting with the wood, and therefore wood whichcontains many knots may be used with equally good results as though thewood were first quality and free from knots.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. A conduit for water comprising a wooden structure open at the top andhaving a lining of paper treated with hot asphaltum substantially asdescribed herein.

2. The herein-described flume having frames A and side walls B andbottom C secured to said frames; paper lining D secured to the innerside of the side walls and bottom; said lining having applied thereto acoating of hot asphaltum.

In witness that I claim the foregoing I have hereunto subscribed my namethis 13th day of July, 1903.

JOSEPH D. MoNAB. Witnesses:

MARGARETE O. NICKELESON, IIENRY T. HAZARD.

